Engdahl Anthills 4 (Cretaceous of the United States)

Also known as UCMP V-73078

Where: Garfield County, Montana (47.6° N, 107.1° W: paleocoordinates 54.4° N, 80.2° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

When: Hell Creek Formation, Lancian (70.6 - 66.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; sandstone

Size class: mesofossils

Reposited in the UCMP

Collection methods: bulk, surface (float), anthill, sieve,

Primary reference: J. D. Archibald. 1982. A study of Mammalia and geology across the Cretaceous-Tertiary boundary in Garfield County, Montana. University of California Publications in Geological Sciences 122:1-286 [J. Alroy/J. Alroy/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 14536: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

 Hybodontiformes - Lonchidiidae
Lonchidion selachos2 Estes 1964 elasmobranch
 Myliobatiformes - Dasyatidae
Myledaphus bipartitus2 Cope 1876 whiptail stingray
 Orectolobiformes - Orectolobidae
Squatirhina americana2 Estes 1964 wobbegong
 Amiiformes - Amiidae
Amia fragosa2 Jordan 1927 bowfin
Amia uintaensis2 Leidy 1873 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis2 Leidy 1856 gar
 Caudata - Urodela
Scapherpeton tectum2 Cope 1876 salamander
? Reptilia indet.2 Laurenti 1768 reptile
 Testudines - Trionychidae
Trionychidae indet.2 Gray 1825 softshell turtle
 Testudines -
Compsemys victa2 Leidy 1856 turtle
 Testudines - Baenidae
Baenidae indet.2 Cope 1882 turtle
 Testudines -
Cryptodira indet.2 Cope 1868 turtle
 Testudines - Nanhsiungchelyidae
Basilemys sp.2 Hay 1902 turtle
 Testudines - Adocidae
Adocus sp.2 Cope 1868 turtle
 Testudines - Panchelydridae
 Sauria -
 Avetheropoda -
Coelurosauria indet.2 Huene 1914 coelurosaur
 Avetheropoda - Caenagnathidae
Chirostenotes sp.2 Gilmore 1924 coelurosaur
 Avetheropoda - Dromaeosauridae
Richardoestesia cf. gilmorei3 Currie et al. 1990 coelurosaur
UCMP 120287
 Neornithischia - Ceratopsidae
Ceratopsidae indet.2 Marsh 1888 ceratopsid
 Neornithischia - Hadrosauridae
Hadrosaurinae indet.2 Lambe 1918 hadrosaurine
 Crocodylia -
"Leidyosuchus sternbergi" = Borealosuchus sternbergii2, Brachychampsa montana2
"Leidyosuchus sternbergi" = Borealosuchus sternbergii2 Gilmore 1910 crocodilian
Brachychampsa montana2 Gilmore 1911 crocodilian
 Leptictida - Gypsonictopidae
Gypsonictops cf. illuminatus Lillegraven 1969 eutherian
 Theriiformes - Peradectidae
Pediomys elegans Marsh 1889 metatherian
 Didelphimorphia - Alphadontidae
Alphadon sp.1 Simpson 1927 marsupial
 Didelphimorphia - Glasbiidae
Glasbius twitchelli Archibald 1982 marsupial
 Multituberculata - Neoplagiaulacidae
Mesodma thompsoni Clemens 1964 multituberculate